The range of SKF bearings and bearing units for extreme temperatures has been extended.The range now includes, in addition to the wellproven deep groove ball bearings and axlebox units of the TVN design for autoclave wagons,also Y-bearing units which are suitable for very high as well as very low temperatures.the widest range of bearings and bearing units for extreme temperatures; it more than meets the demands for reduced machine operating costs,extended service life,high operational reliability and minimum maintenance.